/*
 * Copyright 2022 Rikai authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.xmacs.liga.spark.parser

import net.xmacs.liga.model.Catalog
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.execution.SparkSqlAstBuilder

/** Extends Spark's `AstBuilder` to process the `Expression` within
  * Spark SQL Select/Where/OrderBy clauses.
  */
private[parser] class RikaiSparkSQLAstBuilder(session: SparkSession)
    extends SparkSqlAstBuilder {

  val catalog: Catalog =
    Catalog.getOrCreate(session)
}
